public class RestParameters {
    public static final String  API_KEY     = 'api_key';
    public static final String  API_VERSION = 'v';
    public static final String  FORMAT      = 'format';
    public static final String  METHOD      = 'method';
    public static final String  SESSION_KEY = 'session_key';
    public static final String  CALL_ID     = 'call_id';
}